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公开(公告)号：US10329121B2
公开(公告)日：2019-06-25
申请号：US15591585
申请日：2017-05-10
Applicant: Otis Elevator Company
Inventor： Mark F. Orelup , Brad Guilani , Kathryn Rauss Sherrick , Amir Lotfi , Hong Yang
Abstract: A belt and a method for manufacturing a belt is provided. The belt includes a plurality of lengthwise-extending tension members and a jacket. The jacket substantially retains the plurality of tension members. The jacket has a first side region, a second side region, and a center region between the first and second side regions. The first and second side regions of the jacket are more fire retardant than the center region of the jacket.
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公开(公告)号：US09932205B2
公开(公告)日：2018-04-03
申请号：US15411202
申请日：2017-01-20
Applicant: OTIS ELEVATOR COMPANY
Inventor： Amir Lotfi , Alan Stover Githens
CPC classification number: B66B15/04 , B66B7/06 , B66B9/00 , F16H55/36 , F16H2055/363
Abstract: An elevator system includes an elevator car located in a hoistway. One or more belts are operably connected to the elevator car to drive and/or support the elevator car along the hoistway. The one or more belts are routed over one or more sheaves. The one or more sheaves include an outer surface rotatable about a central axis and a flange located at at least one lateral end of the sheave. The sheave further includes a tracking compensator to limit lateral motion of the belt along the outer surface to prevent the belt from contacting the flange.
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公开(公告)号：US20160023864A1
公开(公告)日：2016-01-28
申请号：US14772211
申请日：2013-03-07
Applicant: OTIS ELEVATOR COMPANY
Inventor： Randall K. Roberts , Amir Lotfi , Ismail Agirman
CPC classification number: B66B1/44 , B66B1/28 , B66B1/3492 , B66B1/40
Abstract: A system and a method are provided for damping vertical oscillations of an elevator car hovering at an elevator landing. The system includes a sensor, a controller and an elevator machine connected to a traction sheave. The sensor is adapted to provide a sensor signal indicative of rotation of the traction sheave, wherein the rotation of the traction sheave corresponds to the vertical oscillations of the hovering elevator car. The controller is adapted to provide a control signal based on the sensor signal. The elevator machine is adapted to reduce the vertical oscillations of the hovering elevator car by controlling the rotation of the traction sheave based on the control signal.
Abstract translation: 提供一种系统和方法，用于阻止在电梯层站盘旋的电梯轿厢的垂直振荡。 该系统包括传感器，控制器和连接到牵引滑轮的电梯机器。 传感器适于提供指示牵引滑轮旋转的传感器信号，其中牵引滑轮的旋转对应于悬停电梯轿厢的垂直振荡。 控制器适于基于传感器信号提供控制信号。 电梯机适用于通过基于控制信号控制牵引滑轮的旋转来减小悬停电梯轿厢的垂直振动。
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公开(公告)号：US20190202658A1
公开(公告)日：2019-07-04
申请号：US16295327
申请日：2019-03-07
Applicant: Otis Elevator Company
Inventor： Amir Lotfi , Randall Keith Roberts , Ronnie E. Thebeau , Michael Garfinkel , Edward Piedra , Dennis Hanvey , Daniel Rush
Abstract: A method includes determining that an elevator car is arriving at a landing at which re-leveling is anticipated; upon the elevator car arriving at the landing at which re-leveling is anticipated, initiating the at least one of a brake cycling operation and a power cycling operation to reduce elevator car sag at the landing; monitoring transfer of weight to or from the elevator car at the landing over a period of time; terminating the at least one of the brake cycling operation and the power cycling operation upon at least one of (i) the transfer of weight to or from the elevator car at the landing over the period of time being less than a threshold and (ii) the elevator car sag at the landing meeting a sag threshold.
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公开(公告)号：US10294079B2
公开(公告)日：2019-05-21
申请号：US15037561
申请日：2013-11-22
Applicant: OTIS ELEVATOR COMPANY
Inventor： Brad Guilani , Amir Lotfi
Abstract: An elevator system includes an elevator car, a motor, and traction sheave operably connected to the motor to drive rotation of the traction sheave. A belt is operably connected to the elevator car and in frictional contact with the traction sheave to urge movement of the elevator car. One or more deflector sheaves are located between the traction sheave and the elevator car over which the belt is routed to guide the belt to the elevator car. The one or more deflector sheaves include an outer sheave surface having a distance from a sheave axis that varies along a width of the traction sheave. The outer surface includes a first portion having a first coefficient of friction and a second portion having a second coefficient of friction less than the first coefficient of friction, the first portion guiding an elevator belt toward a lateral center of the outer surface.
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Patent Agency Ranking
公开(公告)号：US20180215582A1
公开(公告)日：2018-08-02
申请号：US15935753
申请日：2018-03-26
Applicant: OTIS ELEVATOR COMPANY
Inventor： Amir Lotfi , Prasanna Nagarajan , HanJong Kim
CPC classification number: B66B5/027 , B66B1/32 , B66B1/3423 , B66B2201/40
Abstract: A method of operating an elevator system including: controlling, using a controller, a plurality of components of the elevator system, controlling includes operating at least one of an internal power source, an elevator car, a drive unit, a power conversion device, and a brake; detecting when an external power source is unavailable; deactivating the power conversion device when external power source is unavailable; determining at least one of a motoring mode and a near balance mode; connecting to an internal power source when at least one of the motoring mode and the near balance mode is determined; activating the power conversion device when at least one of the motoring mode and the near balance mode is determined; and increasing, using the internal power source, voltage of the drive unit, the internal power source is configured to provide an uninterrupted power to drive unit when the external power source is unavailable.
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公开(公告)号：US20170283213A1
公开(公告)日：2017-10-05
申请号：US15090843
申请日：2016-04-05
Applicant: Otis Elevator Company
Inventor： Amir Lotfi , Prasanna Nagarajan , HanJong Kim
CPC classification number: B66B1/3423 , B66B1/30 , B66B1/32 , B66B5/0018 , B66B5/02 , B66B5/027 , B66B9/00 , B66B2201/00
Abstract: A method of operating an elevator system is presented. The method comprises controlling, using a controller, a plurality of components of the elevator system. The controlling comprises operating at least one of an internal power source, an elevator car, a drive unit, a power conversion device, and a brake. The method also comprises detecting, using the controller, when an external power source is unavailable; deactivating, using the controller, the power conversion device when an external power source is unavailable; and determining, using the controller, a mode of the elevator car. The mode includes at least one of a motoring mode and a near balance mode. The method further comprises connecting, using the controller, to an internal power source, when at least one of the motoring mode and the near balance mode is determined; and increasing, using the internal power source, voltage of the drive unit.
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公开(公告)号：US20170267486A1
公开(公告)日：2017-09-21
申请号：US15074402
申请日：2016-03-18
Applicant: Otis Elevator Company
Inventor： Amir Lotfi , Daniel M. Bohn
CPC classification number: B66B1/32 , B66B1/3407 , B66B9/00
Abstract: An elevator system includes an elevator car; a machine to impart motion to the elevator car; a brake to stop rotation of the machine, the brake comprising a first coil and a second coil, wherein removing power from the first coil and the second coil applies the brake to the machine; and a controller in communication with the brake, the controller configured to connect the first coil and the second coil in one of a first electrical configuration and a second electrical configuration.
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公开(公告)号：US20170174472A1
公开(公告)日：2017-06-22
申请号：US15116120
申请日：2014-02-06
Applicant: Otis Elevator Company
Inventor： Amir Lotfi , Randall Keith Roberts , Ronnie E. Thebeau , Michael Garfinkel , Edward Piedra , Dennis Hanvey , Daniel Rush
Abstract: Embodiments are directed to determining that an elevator car of an elevator system is approaching a landing, obtaining, by a controller, a value for at least one parameter associated with the elevator system based on the determination that the elevator car is approaching the landing, determining that the elevator car arrives at the landing within a threshold distance, determining, by the controller, when to engage in at least one of a brake cycling operation and a power cycling operation based on the value for the at least one parameter and based on determining that the elevator car arrives at the landing within the threshold distance, and initiating the at least one of a brake cycling operation and a power cycling operation at a time corresponding to the determination of when to engage in the at least one of a brake cycling operation and a power cycling operation.
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公开(公告)号：US20170073184A1
公开(公告)日：2017-03-16
申请号：US15261722
申请日：2016-09-09
Applicant: Otis Elevator Company
Inventor： Amir Lotfi , Michael C. Lang
Abstract: An elevator brake assembly including an asymmetrical brake comprising at least three brake segments, a brake activating device operably coupled to the asymmetrical brake, the brake activating device comprising a first activation element and a second activation element, wherein the first activation element is configured to activate one of the at least three brake segments, and the second activation element is configured to activate the remaining of the at least three brake segments.
Abstract translation: 包括至少三个制动段的不对称制动器的电梯制动器组件，可操作地联接到所述不对称制动器的制动器启动装置，所述制动器启动装置包括第一启动元件和第二激活元件，其中所述第一激活元件被配置为激活 所述至少三个制动段中的一个，并且所述第二启动元件构造成激活所述至少三个制动段的剩余部分。
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